210Pb-dating of cold alpine firn/ice cores from Colle Gnifetti, Switzerland

Gäggeler, H.; von Gunten, H. R.; Rössler, E.; Oeschger, H.; Schotterer, U. (1983). 210Pb-dating of cold alpine firn/ice cores from Colle Gnifetti, Switzerland. Journal of glaciology, 29(101), pp. 165-177. International Glaciological Society 10.3189/S0022143000005220

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The 210Pb(210Po) method has for the first time been successfully applied for dating cold alpine firn/ice cores. The mean accumulation rate on Grenzgletscher near Colle Gnifetti (Switzerland, altitude 4 450 m) is found to be 37 cm year−1 and 32 cm year−1 for the two ice cores drilled down to 32 m and 65 m in 1976 and 1977, respectively. The surface activity amounts to 4 dpm kg−1 ice. It is shown that a good agreement between the data of the two ice cores is reached with a model taking into account an effect of decreasing annual ice layers with depth. With this thin-out correction, the accumulation rate in the 1977 core increases to 39 cm year−1.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Schotterer, Ulrich Hermann

Subjects:

500 Science > 530 Physics

ISSN:

0022-1430

Publisher:

International Glaciological Society

Language:

English

Submitter:

BORIS Import 2

Date Deposited:

07 Oct 2021 09:48

Last Modified:

07 Oct 2021 09:56

Publisher DOI:

10.3189/S0022143000005220

BORIS DOI:

10.48350/158676

URI:

https://boris.unibe.ch/id/eprint/158676

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